EP1093777B1 - Endoprothèse d'épaule - Google Patents

Endoprothèse d'épaule Download PDF

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Publication number
EP1093777B1
EP1093777B1 EP00122843A EP00122843A EP1093777B1 EP 1093777 B1 EP1093777 B1 EP 1093777B1 EP 00122843 A EP00122843 A EP 00122843A EP 00122843 A EP00122843 A EP 00122843A EP 1093777 B1 EP1093777 B1 EP 1093777B1
Authority
EP
European Patent Office
Prior art keywords
shaft
bore
clamping element
shoulder
middle portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00122843A
Other languages
German (de)
English (en)
Other versions
EP1093777A2 (fr
EP1093777A3 (fr
Inventor
Bernd Dr. Mühlhäusler
Diethard Dr. Wahl
Wilfried Dr. Glien
Dirk Salomon
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Synthes Bettlach GmbH
Original Assignee
Mathys AG Bettlach
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mathys AG Bettlach filed Critical Mathys AG Bettlach
Publication of EP1093777A2 publication Critical patent/EP1093777A2/fr
Publication of EP1093777A3 publication Critical patent/EP1093777A3/fr
Application granted granted Critical
Publication of EP1093777B1 publication Critical patent/EP1093777B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
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    • A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
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    • A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
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    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30878—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
    • A61F2002/30891—Plurality of protrusions
    • A61F2002/30894—Plurality of protrusions inclined obliquely with respect to each other
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • A61F2002/4018—Heads or epiphyseal parts of humerus
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/40—Joints for shoulders
    • A61F2/4014—Humeral heads or necks; Connections of endoprosthetic heads or necks to endoprosthetic humeral shafts
    • A61F2002/4051—Connections of heads directly to shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/40—Joints for shoulders
    • A61F2/4059—Humeral shafts
    • A61F2002/4062—Proximal or metaphyseal parts of shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/40—Joints for shoulders
    • A61F2/4059—Humeral shafts
    • A61F2002/407—Intermediate parts of shafts
    • A61F2002/4074—Connections of proximal or metaphyseal parts to distal or diaphyseal parts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2/46—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor
    • A61F2/4637—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis
    • A61F2002/4641—Special tools or methods for implanting or extracting artificial joints, accessories, bone grafts or substitutes, or particular adaptations therefor for connecting or disconnecting two parts of a prosthesis for disconnecting
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
    • A61F2220/0033—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit

Definitions

  • the invention relates to a shoulder endoprosthesis with a condyle, with a Central part to which the condyle is attachable, and with a shaft part, the also fastened to the middle part.
  • shoulder prostheses are generally modular.
  • a shoulder endoprosthesis is known in which the middle part is adjustable relative to the shaft part in its rotational position about the shaft axis.
  • the middle part is not adjustable along the shaft axis and the necessary length
  • the prosthesis is achieved by different lengths middle parts.
  • EP-B1-0 278 807 a shoulder prosthesis is described which consists of a humeral piece and a piece carrying the joint ball. Both parts are in Longitudinally displaced against each other, so that anatomical proportions can be adjusted. The rotation of the two parts against each other but not fixed. Also anatomical angular relationships of the ball head to Humeral shaft can not be adjusted.
  • a shoulder prosthesis which consists of a humeral stem and a socket. Head and shaft are in this prosthesis compared to the natural shoulder joint reversed, so that the head part on Shoulder blade is attached.
  • Advantage of the construction is the dislocation security in all anatomical positions. However, this joint is limited applicable because it especially in traumatic indications the different conditions can not be adjusted.
  • the Glenoidteil is also very voluminous and consequently not always anatomically favorably implanted.
  • the object of the invention is a modular shoulder prosthesis, the very different anatomical conditions, especially traumatic Indications, does justice.
  • this object is achieved in that the middle part opposite the shaft part along the shaft axis is adjustable and that further the middle part adjustable in relation to the shaft part in its rotational position about the shaft axis is.
  • the middle part has a bore and is the shaft part by means a clamping element in this bore clamped.
  • the proximal end of the shaft part and the clamping element with cooperating conical surfaces and is the shank part through Taper clamping clamped to the middle part.
  • the proximal end of the shaft portion may be formed as a conical pin and the tensioning element can be an expandable sleeve with a conical inner surface be. By clamping the sleeve on the conical pin, the sleeve is widened, so that it is fixed in the bore of the middle part.
  • proximal end of the shaft with a To provide conical bore and expandable form and as a clamping element To clamp a conical pin in this hole, so that the expanded Fixed end of the shaft part in the bore of the middle part.
  • the setting of the total length of the prosthesis is stepless or in steps of less than 5 mm and the adjustment of the angle of rotation between the middle part and shaft part also stepless.
  • the middle part has an element for fixing bone fragments. These may be claws or tips for the fixation of Bone fragments act.
  • the shoulder endoprosthesis is modular constructed and consists of the shaft, the clamping element, the middle part and the condyle.
  • the connection of shaft and middle part is stepless or in small steps in the axial direction of the shaft axis adjustable.
  • the connection of Shank and middle part is also stepless in their rotation angle around the Shaft axis (ante and retroversion angle) adjustable.
  • the connection of Shaft and middle part is able to absorb rotational moments. The adjustment of the implant along the shaft axis and the rotation around it intraoperatively. These adjustments of the implant take place on the implanted Shaft.
  • the parts of the shoulder prosthesis can thus by simple and safe Elements are connected, which are still exchanged during the operation can be, and on the other hand, the angle and length ratios be adjusted continuously.
  • shafts are available in different lengths and diameters Can be used solid and modular heads with different external geometries Can be used and the middle parts with different outer geometries be used.
  • the head can also be integral with the middle part.
  • the shank part and the middle part can be made of titanium or cobalt-chromium alloys and the condyle may be made of a cobalt-chromium alloy or ceramic be prepared.
  • the shoulder endoprosthesis in FIG. 1 has a shaft 10 , a tensioning element 20 placed thereon, a middle part 30 mounted thereon and rotatable by 360 ° relative to the shaft axis A and height-adjustable along the shaft axis A.
  • This has a receptacle 32 , whose axis B is skewed or at an angle to the shaft axis A.
  • the receptacle 32 is used to attach a head 40 of the shoulder endoprosthesis.
  • Fig. 2 In the embodiment of Fig. 2 is located at the proximal end of the shaft 10, a stretchable or expandable external thread 11 and a threaded bore 12th
  • the middle part 30 has a through bore 34 with internal thread 35 .
  • the central part 30 On the external thread 11 of the shaft 10 , the central part 30 is screwed with its internal thread 35 along the axis A.
  • the clamping element 20 is formed by a threaded pin 22 and an adjoining cone 24 .
  • the fixation of the shaft 10 on the central part 30th The effective length of the shank 10 can be changed by screwing the shank 10 into the central part 30 at different distances and adapted to the requirements of the respective case.
  • the clamping element 20 is screwed and thereby the shaft 10 is clamped on the central part 30 .
  • the clamping can also be released during an operation, for example, to correct the shaft length or the rotational position of the shaft 10 .
  • the proximal end of the shaft 10 is formed as a conical pin 13 with overlying threaded pin 14 .
  • the tensioning element 20 is an expandable sleeve with a conically widening inner diameter in the distal direction and with an external thread 26 .
  • the sleeve-shaped clamping element 20 is placed on the conical pin 13 and secured with a nut 15 and then screwed with its external thread 26 along the axis A in the middle part 30 until the shaft 10 has the desired effective length.
  • the sleeve-shaped clamping element 20 is pressed against the conical pin 13 and thereby radially expanded, resulting in a tension in the bore 34 of the central part 30 and thus to a fixation of the length of the shaft 10 .
  • a correction of the shaft length is possible.
  • the embodiment of Fig. 4 differs from that of Fig. 2 in that the through bore 34 of the central portion 30 has a smooth inner wall instead of a thread.
  • the shoulder endoprosthesis according to Fig. 4 thus consists of the shaft 10 at the proximal end of which is a stretchable or expandable end piece 16 with a smooth outer surface.
  • the end piece 16 is again the threaded bore 12th
  • the middle part 30 is fitted with its inner bore 34 along the axis A on the end piece 16 of the shaft 10 .
  • the embodiment of Fig. 5 also differs from that of Fig. 3 only in that the through bore 34 of the central part 30 has a smooth inner wall instead of a thread.
  • the sleeve-shaped clamping element 20 is placed on the conical pin 13 and the nut 15 is screwed.
  • the middle part 30 is then plugged with its inner bore 34 along the axis A.
  • the clamping element 20 is pressed onto the conical pin 13 and thereby radially expanded, resulting in a tension in the bore 34 of the central part 30 .
  • FIG. 6 shows the embodiment of the middle part 30 with tip-like elevations 36 .
  • These are proximal-lateral, row-shaped, column-shaped, diagonal or arranged in any shape so that bone fragments can be fixed positively by pressing on these tip-like elevations against tensile forces along the axis A.
  • Holes 42 are provided at the distal end of the central portion of the prosthesis, which allow a pull down and primary retention of bone fragments over the tip-like elevations 36 .
  • Medially aligned holes 44 are used to receive threads that extend beyond the proximal-laterally imprinted bone fragments and prevent their lifting from the tip-like elevations 37 .
  • the tip-like projections 37 are designed so that the surface of the shoulder endoprosthesis and thus the micro-surface of the bone fragments is increased.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Claims (7)

  1. Endoprothèse d'épaule avec une tête d'articulation (40), avec un élément central (30) auquel la tête d'articulation (40) peut être fixée, et avec une tige (10) qui peut également être fixée à l'élément central (30), l'élément central (30) étant réglable par rapport à la tige (10) le long de l'axe de la tige (A) de ce dernier, l'élément central (30) étant réglable dans sa position de rotation autour de l'axe de la tige (A) et l'élément central (30) comportant un perçage (34), caractérisée en ce que l'élément central (30) avec son perçage intérieur (34) peut être emboíté sur une extrémité (16) de la tige (10) et en ce que la tige (10) peut être serrée dans ce perçage (34) à l'aide d'un élément de serrage (20).
  2. Endoprothèse d'épaule selon la revendication 1, caractérisée en ce que la tige (10) peut être serrée dans le perçage (34) de l'élément central (30) à l'aide d'un dispositif de serrage à cône.
  3. Endoprothèse d'épaule selon la revendication 2, caractérisée en ce que l'extrémité proximale (16) de la tige (10) est extensible et comporte un perçage conique (12) dans lequel l'élément de serrage (20) vient en prise.
  4. Endoprothèse d'épaule selon la revendication 2, caractérisée en ce que l'élément de serrage (20) est une douille extensible avec une surface intérieure conique et en ce que l'extrémité proximale de la tige (10) comporte une surface extérieure conique (13) sur laquelle l'élément de serrage (20) vient en prise.
  5. Endoprothèse d'épaule selon une des revendications 1 à 4, caractérisée en ce que le perçage (34) de l'élément central (30) comporte un filetage intérieur (35) et en ce que l'élément de serrage (20) et/ou l'extrémité proximale de la tige (10) ont un filetage extérieur correspondant.
  6. Endoprothèse d'épaule selon une des revendications 1 à 4, caractérisée en ce que le perçage (34) de l'élément central (30) a une surface intérieure lisse et en ce que l'élément de serrage (20) et/ou l'extrémité proximale de la tige (10) ont une surface extérieure lisse.
  7. Endoprothèse d'épaule selon une des revendications 1 à 6, caractérisée en ce que l'élément central (30) dispose sur la surface extérieure d'un élément (36) pour la fixation de fragments d'os brisés.
EP00122843A 1999-10-22 2000-10-20 Endoprothèse d'épaule Expired - Lifetime EP1093777B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29918669U 1999-10-22
DE29918669U DE29918669U1 (de) 1999-10-22 1999-10-22 Schulter-Endoprothese

Publications (3)

Publication Number Publication Date
EP1093777A2 EP1093777A2 (fr) 2001-04-25
EP1093777A3 EP1093777A3 (fr) 2002-04-10
EP1093777B1 true EP1093777B1 (fr) 2005-10-05

Family

ID=8080656

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122843A Expired - Lifetime EP1093777B1 (fr) 1999-10-22 2000-10-20 Endoprothèse d'épaule

Country Status (4)

Country Link
US (1) US6524342B1 (fr)
EP (1) EP1093777B1 (fr)
AT (1) ATE305761T1 (fr)
DE (2) DE29918669U1 (fr)

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Also Published As

Publication number Publication date
US6524342B1 (en) 2003-02-25
DE50011285D1 (de) 2005-11-10
DE29918669U1 (de) 1999-12-30
EP1093777A2 (fr) 2001-04-25
EP1093777A3 (fr) 2002-04-10
ATE305761T1 (de) 2005-10-15

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